Myspace Login Issue

I have been unable to login to myspace since I upgraded to Leopard. Every time I attempt to login it takes me back to the login screen and gives me the error "You must be logged in to do that."

I have already tried clearing the cache and cookies. I am having the same problem using Firefox on this machine as well. I can still login to my account from my old Windows laptop, so I know that I am using the correct password and that the account is accessible. I haven't had any problems logging into any other website so far.

Any ideas?